Pycnogonum cf. ornans Stock, 1992

Sabroux, Romain, Hassanin, Alexandre & Corbari, Laure, 2022, Sea spiders (Arthropoda: Pycnogonida) collected during the Madibenthos Expedition from Martinique shallow waters, European Journal of Taxonomy 851 (1), pp. 1-141 : 110

Pycnogonum cf. ornans Stock, 1992

Fig. 29

Pycnogonum (Retroviger) ornans Stock, 1992a: 136–137 , 139, figs 76–80.

Pycnogonum ornans – Lucena & Christoffersen 2018a: 103 , 114.

Pycnogonum cf. ornans – Sabroux et al. 2019b: 1525, tab. 1, fig. 3.

Type material

Pycnogonum ornans Stock, 1992 . Holotype: NL ZMA.PYC.3441 and ZMA.PYC.P.1432 (not examined). Type locality: off Barra Sêca, Espírito Santo state, Brazil.

Material examined

MARTINIQUE • 1 ♀; Ste-Marie ; 14°46.3ʹ N, 60°57.5ʹ W; depth 20 m; 20 Sep. 2016; st. AB260; MNHN- IU-2016-1064/ MK411042 .

Remarks

This specimen is similar to the description given by Stock (1992a) for Pycnogonum ornans , a monotypic species described from Brazil. In particular, propodal sole spines are found to be bifid as in Stock’s description; it also agrees in the distance between the lateral processes, ornamentation of the trunk, the lateral processes, the coxae 1 and the proboscis. However, the Martinique specimen differs from Stock’s description by the overall stouter appearance of the animal, as well as the less pronounced ornamentation of the trunk, lateral processes and coxae, and the less elongate propodus.

Distribution

Pycnogonum ornans is only known from Brazil. This would be the first record of this species in the Caribbean.

Depth range

Pycnogonum ornans is known to dwell at 38– 47 m. The present specimen was sampled at 20 m.

Figures

Fig. 29. Pycnogonum cf. ornans Stock, 1992, ♀, MNHN-IU-2016-1064. A. Body, dorsal view. B. Body, lateral view (same scale as A). C. First leg. D. Tarsus and propodus of first leg.